A diaphragm valve with an elastic load-equalizing diaphragm clamping structure

Abstract

This utility model discloses a diaphragm valve with an elastic load-equalizing diaphragm clamping structure, relating to the field of diaphragm valve technology. The utility model includes a valve body and a valve cover disposed above the valve body, and further includes: a main body mounted on the valve body; a compression part disposed within the valve body; and an mounting part located within the valve cover. The compression part includes a dispersion component disposed on the valve body; and a limiting component mounted within the valve body. The dispersion component includes a diaphragm disposed on the valve body, with several protruding strips fixedly connected to its top and bottom. By incorporating the compression part, this utility model solves the problem in existing diaphragm valves where uneven pressure on the diaphragm during use leads to fatigue cracks and damage due to uneven stress during frequent opening and closing, resulting in sealing failure and media leakage, thus affecting the normal operation of the diaphragm valve.

Description

Technical Field

[0001] This utility model belongs to the field of diaphragm valve technology, and in particular relates to a diaphragm valve with an elastic load-equalizing diaphragm clamping structure. Background Technology

[0002] A diaphragm valve is a special type of shut-off valve. Its opening and closing element is a diaphragm made of soft material. The valve is opened and closed by the up and down movement of the diaphragm. According to the different flow channel structures, diaphragm valves are mainly divided into weir diaphragm valves, straight-through diaphragm valves, and angle diaphragm valves. The basic structure of existing diaphragm valves includes: valve body, valve cover, diaphragm, valve stem, and actuator. The diaphragm edge usually adopts a flat flange clamping structure, that is, the diaphragm edge is clamped between the flat flanges between the valve body and the valve cover, and sealing and fixing are achieved by applying pre-tightening force through multiple bolts.

[0003] However, in the operation of existing diaphragm valves, the pressure on the diaphragm is uneven. When the valve is frequently opened and closed, the diaphragm is prone to fatigue cracks and damage due to uneven stress, which leads to sealing failure and media leakage, thus affecting the normal use of the diaphragm valve. Utility Model Content

[0004] The purpose of this utility model is to provide a diaphragm valve with an elastic load-equalizing diaphragm clamping structure. By setting up a squeezing part, it solves the problem that in the existing diaphragm valve, the pressure on the diaphragm is uneven during use. When frequently opening and closing, the diaphragm is prone to fatigue cracks and damage due to uneven stress, which leads to sealing failure and media leakage, thus affecting the normal use of the diaphragm valve.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a diaphragm valve with an elastic load-sharing diaphragm clamping structure, comprising a valve body and a valve cover disposed above the valve body, and further comprising: a main body mounted on the valve body; a squeezing part disposed within the valve body; and an mounting part located within the valve cover. The squeezing part includes a dispersing component disposed on the valve body; and a limiting component disposed within the valve body. The dispersing component includes a diaphragm disposed on the valve body. Several protruding strips (first type) are fixedly connected to the top and bottom of the diaphragm. Protruding strips (second type) and (third type) are also fixedly connected to the top and bottom of the diaphragm. There are eight protruding strips (first type) arranged in two groups, with the two groups of protruding strips (first type) mirror images of each other, the two groups of protruding strips (second type) mirror images of each other, and the two groups of protruding strips (third type) mirror images of each other.

[0007] Furthermore, the main body includes a groove formed in the inner wall of the valve body, a protrusion is provided in the valve cover, two sliding grooves are formed in the inner wall of the valve cover, sliders are slidably connected to the inner walls of the two sliding grooves, the bottoms of the two sliders are fixedly connected to the protrusion, a rotating component is provided in the valve cover, the two sliding grooves are symmetrically distributed, and the protrusion and the groove are adapted to each other, the rotating component includes a handle rotatably connected to the inner wall of the valve cover, a sliding rod is fixedly connected to the bottom of the handle, a threaded sleeve is slidably connected to the outer wall of the sliding rod, the bottom of the threaded sleeve is rotatably connected to the protrusion, a threaded groove is formed in the inner wall of the valve cover, a threaded groove is formed in the outer wall of the threaded sleeve, and the threaded groove of the threaded sleeve is adapted to the threaded groove of the valve cover.

[0008] Furthermore, the mounting part includes a positioning component, which is mounted on the valve body; and a disassembly and assembly component, wherein several disassembly and assembly components are provided, each of which is mounted on the valve cover, and the several disassembly and assembly components are arranged in an array.

[0009] Furthermore, the limiting component includes two extrusion strips disposed above the valve body. The bottom of the lower extrusion strip is fixedly connected to the valve body, and the top of the upper extrusion strip is fixedly connected to the valve cover. The diaphragm has several through holes I. A limiting element is disposed outside the diaphragm. The several through holes I are arranged in an array. The limiting element includes two limiting grooves I respectively opened on the side of the valve body and the valve cover that are close to each other. Limiting grooves II are opened on the side of the valve body and the valve cover that are close to each other. Several limiting grooves III are opened on the side of the valve body and the valve cover that are close to each other. The two limiting grooves I are respectively adapted to the two protruding strips II. The two limiting grooves II are respectively adapted to the two protruding strips III. The several limiting grooves III are respectively adapted to the several protruding strips I.

[0010] Furthermore, the positioning assembly includes several positioning rods fixedly connected to the top of the valve body, and a positioning element is provided on the valve cover. The several positioning rods are arranged in an array. The positioning element includes several through holes II formed in the inner wall of the diaphragm, and the several through holes II all penetrate the diaphragm. The inner wall of the valve cover is provided with several positioning holes, and the several positioning holes all penetrate the valve cover. The several positioning rods are respectively adapted to the several through holes II, and the several positioning rods are respectively adapted to the several positioning holes.

[0011] Furthermore, the assembly includes a bolt disposed within the valve body, a washer disposed above the bolt, a nut disposed above the washer, a snap-fit ​​component disposed outside the bolt, the bolt and the nut being adapted to each other, the snap-fit ​​component including a polygonal groove formed on the outer wall of the valve body, a polygonal block being fixedly connected to the outer wall of the bolt, the polygonal groove and the polygonal block being adapted to each other.

[0012] This utility model has the following beneficial effects:

[0013] 1. By setting up a compression section, during installation, after the diaphragm is fitted onto the valve body and limited, the protruding strips at the bottom of the diaphragm are inserted into the corresponding limiting grooves on the valve body. Then, the valve cover is placed on the valve body, so that the protruding strips at the top of the diaphragm are inserted into the corresponding limiting grooves on the valve cover. After the valve cover and valve body are fixed, the diaphragm is pressed tightly by the compression strips to achieve a fixed seal. When opening and closing the valve, the diaphragm is closed and opened by moving the protrusions to compress or move away from the diaphragm. The traditional planar clamping can be changed to uniform clamping. The diaphragm is divided by multiple protruding strips, so that the clamping force is evenly distributed layer by layer, eliminating stress concentration. At the same time, the diaphragm is compressed by the compression strips to ensure its connection strength, which can prevent the diaphragm from being damaged due to stress, avoid sealing failure and media leakage, and thus ensure the normal use of the diaphragm valve.

[0014] 2. By setting up an installation section, during the installation process, the diaphragm is first aligned and limited with the valve body using the positioning component, and then the valve cover is aligned and limited with the valve body using the positioning component. Subsequently, the bolts of the disassembly and assembly component are inserted into the valve body and valve cover, and the bolts are limited using the snap-fit ​​component. After the gasket is put on, the nut is tightened to complete the fixation of the valve cover and valve body. This ensures the stability of the installation between the valve cover and valve body, avoids the valve cover from tilting when tightening a single nut, and further ensures the uniformity of the clamping force. At the same time, the positioning rod and through hole two prevent the diaphragm from becoming eccentric, thereby further ensuring the normal use of the diaphragm valve.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0020] Figure 4 This is a partial cross-sectional view of the present invention.

[0021] Figure 5 This utility model Figure 4 A magnified structural diagram of B in the diagram;

[0022] Figure 6 This is a partial cross-sectional view of the main body of the present invention.

[0023] Figure 7 This is a schematic diagram of the overall structure of the slide bar of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Main body; 101. Valve body; 102. Valve cover; 103. Groove; 104. Protrusion; 105. Slide groove; 106. Slider; 107. Handle; 108. Slide rod; 109. Threaded sleeve; 2. Extrusion part; 21. Dispersion assembly; 211. Diaphragm; 212. Protrusion strip one; 213. Protrusion strip two; 214. Protrusion strip three; 22. Limiting assembly; 221. Extrusion strip; 222. Through hole one; 223. Limiting groove one; 224. Limiting groove two; 225. Limiting groove three; 3. Mounting part; 31. Positioning assembly; 311. Positioning rod; 312. Through hole two; 313. Positioning hole; 32. Disassembly and assembly assembly; 321. Bolt; 322. Washer; 323. Nut; 324. Polygonal groove; 325. Polygonal block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-7As shown, this utility model is a diaphragm valve with an elastic load-sharing diaphragm clamping structure, including a valve body 101 and a valve cover 102 disposed above the valve body 101, and further including: a main body 1, which is mounted on the valve body 101; a squeezing part 2, which is disposed inside the valve body 101; and a mounting part 3, which is located inside the valve cover 102. The main body 1 includes a groove 103 formed in the inner wall of the valve body 101. A protrusion 104 is provided in the valve cover 102. Two sliding grooves 105 are formed in the inner wall of the valve cover 102. Sliding blocks 106 are slidably connected to the inner walls of the two sliding grooves 105. The bottom of 6 is fixedly connected to the protrusion 104. A rotating component is provided inside the valve cover 102. Two sliding grooves 105 are symmetrically distributed. The protrusion 104 is adapted to the groove 103. The rotating component includes a handle 107 rotatably connected to the inner wall of the valve cover 102. A sliding rod 108 is fixedly connected to the bottom of the handle 107. A threaded sleeve 109 is slidably connected to the outer wall of the sliding rod 108. The bottom of the threaded sleeve 109 is rotatably connected to the protrusion 104. A threaded groove is opened on the inner wall of the valve cover 102. A threaded groove is opened on the outer wall of the threaded sleeve 109. The threaded groove of the threaded sleeve 109 is adapted to the threaded groove of the valve cover 102.

[0028] The extrusion section 2 includes a dispersion assembly 21 disposed on the valve body 101; and a limiting assembly 22 installed inside the valve body 101. The dispersion assembly 21 includes a diaphragm 211 disposed on the valve body 101. A plurality of protruding strips 1 212 are fixedly connected to the top and bottom of the diaphragm 211, as are protruding strips 213 and 3 214. There are eight protrusions, divided into two groups. The two groups of protrusions 212 are mirror images of each other, as are the two groups of protrusions 213 and 214. The limiting component 22 includes two extrusion bars 221 positioned above the valve body 101. The bottom of the lower extrusion bar 221 is fixedly connected to the valve body 101, and the top of the upper extrusion bar 221 is fixedly connected to the valve cover 102. The diaphragm 211 has several through holes 222. A limiting device is set outside the diaphragm 211. The valve body 101 has several through holes 222 arranged in an array. The limiting element includes two limiting grooves 223 respectively formed on the side of the valve body 101 and valve cover 102 that are close to each other. Limiting grooves 224 are formed on the side of the valve body 101 and valve cover 102 that are close to each other. Several limiting grooves 225 are formed on the side of the valve body 101 and valve cover 102 that are close to each other. The two limiting grooves 223 are respectively adapted to two protruding strips 213, and the two limiting grooves 224 are respectively adapted to two protruding strips 213. The three 214 are adapted to each other, and the several limiting grooves 225 are adapted to the several protruding strips 212 respectively. By setting the extrusion part 2, the traditional planar clamping can be changed to uniform clamping. The diaphragm 211 is divided by multiple protruding strips, so that the clamping force is evenly distributed layer by layer, eliminating stress concentration. At the same time, the diaphragm 211 is squeezed by the extrusion strips 221 to ensure its connection strength, which can prevent the diaphragm 211 from being damaged due to stress, avoid sealing failure and media leakage, and thus ensure the normal use of the diaphragm valve.

[0029] The mounting section 3 includes a positioning assembly 31, which is mounted on the valve body 101; and a disassembly assembly 32, of which several are mounted on the valve cover 102 in an array. The positioning assembly 31 includes several positioning rods 311 fixedly connected to the top of the valve body 101. The valve cover 102 has positioning elements, with the positioning rods 311 arranged in an array. Each positioning element includes several through holes 312 formed in the inner wall of the diaphragm 211, penetrating the diaphragm 211. The inner wall of the valve cover 102 has several positioning holes 313, penetrating the valve cover 102. Each positioning rod 311 is adapted to one of the through holes 312, and each positioning rod 311 is aligned with one of the positioning holes 312. The 13-phase matching and disassembly assembly 32 includes a bolt 321 set inside the valve body 101, a washer 322 set above the bolt 321, a nut 323 set above the washer 322, and a snap-fit ​​component set outside the bolt 321. The bolt 321 and the nut 323 are compatible. The snap-fit ​​component includes a polygonal groove 324 formed on the outer wall of the valve body 101. A polygonal block 325 is fixedly connected to the outer wall of the bolt 321. The polygonal groove 324 and the polygonal block 325 are compatible. By setting the mounting part 3, the stability of the installation between the valve cover 102 and the valve body 101 can be ensured, and the valve cover 102 can be prevented from tilting when a single nut 323 is turned. This further ensures the uniformity of the clamping force. At the same time, the positioning rod 311 and the through hole 312 prevent the diaphragm 211 from becoming eccentric, thereby further ensuring the normal use of the diaphragm valve.

[0030] A specific application of this embodiment is as follows: When installation is required, the diaphragm 211 can be fitted onto the valve body 101 and limited by the through hole 312 and the positioning rod 311. Then, the diaphragm 211 can be pressed tightly against the valve body 101. At this time, the protrusion 212 at the bottom of the diaphragm 211 can be inserted into the limiting groove 225 on the valve body 101, the protrusion 213 at the bottom of the diaphragm 211 can be inserted into the limiting groove 223 on the valve body 101, and the protrusion 214 at the bottom of the diaphragm 211 can be inserted into the limiting groove 224 on the valve body 101, thereby completing the limiting.

[0031] After installation on the diaphragm 211, the valve cover 102 can be placed on the valve body 101 and the positioning hole 313 and positioning rod 311 can be used to limit the position. Then, the position can be limited by the protrusions 212, 213 and 214 on the diaphragm 211 and the limiting grooves 223, 224 and 225 on the valve cover 102.

[0032] After the limiting position is set, bolt 321 can be inserted into valve body 101 and valve cover 102. Then, the polygonal block 325 and polygonal groove 324 can be used for limiting. Next, gasket 322 can be placed on bolt 321, and nut 323 can be screwed onto bolt 321. Finally, tighten to complete the fixing. At this point, due to the function of positioning rod 311 and positioning hole 313, the valve cover 102 will not warp. After installing several disassembly and assembly components 32, the protrusions 212, 213, and 214 can be positioned. The three protruding bars 214, the first limiting groove 223, the second limiting groove 224, and the third limiting groove 225 complete the limiting, ensuring that the diaphragm 211 is restricted between the valve cover 102 and the valve body 101. The protruding bars 212, the second protruding bars 213, and the third protruding bars 214, as well as the first limiting groove 223, the second limiting groove 224, and the third limiting groove 225, will divide the diaphragm 211 into two areas, an outer ring, which is used to distribute the fixing force on the diaphragm 211, while the inner ring is used to form a valve with the groove 103 and the protrusion 104.

[0033] After the valve cover 102 and valve body 101 are fixed by the disassembly and assembly assembly 32, the diaphragm 211 will be pressed by the extrusion strip 221, thereby completing the fixed seal.

[0034] When the valve needs to be opened or closed, the handle 107 can be turned to rotate the slide rod 108. When the slide rod 108 rotates, it will drive the threaded sleeve 109 to rotate. When the threaded sleeve 109 rotates, it will move downward. At this time, the protrusion 104 will move downward under the limit of the slide groove 105 and the slider 106, thereby squeezing the inner ring of the diaphragm 211 and finally sticking to the groove 103 to complete the sealing closure. When it is necessary to open, it can be rotated in the opposite direction to make the protrusion 104 move away from the groove 103 and complete the opening.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A diaphragm valve with an elastic load-sharing diaphragm clamping structure, comprising a valve body and a valve cover disposed above the valve body, characterized in that, Also includes: Main body, which is mounted on the valve body; The extrusion section is disposed within the valve body; Mounting part, the mounting part being located inside the valve cover; The extrusion section includes a dispersing component disposed on the valve body; and A limiting component, wherein the limiting component is installed in the valve body; The dispersion component includes a diaphragm disposed on the valve body, with a plurality of protruding strips 1 fixedly connected to the top and bottom of the diaphragm, a protruding strip 2 fixedly connected to the top and bottom of the diaphragm, and a protruding strip 3 fixedly connected to the top and bottom of the diaphragm. There are eight raised strips, divided into two groups. The two groups of raised strips are mirror images of each other, the two groups of raised strips are mirror images of each other, and the two groups of raised strips are mirror images of each other.

2. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 1, characterized in that, The main body includes a groove formed in the inner wall of the valve body, a protrusion provided in the valve cover, two sliding grooves formed in the inner wall of the valve cover, sliders slidably connected to the inner walls of the two sliding grooves, the bottoms of the two sliders being fixedly connected to the protrusions, and a rotating component provided in the valve cover. The two grooves are symmetrically distributed, and the protrusions and grooves are matched.

3. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 2, characterized in that, The mounting portion includes a positioning assembly mounted on the valve body; and The assembly and disassembly components are provided in multiple units, and all of the assembly and disassembly components are installed on the valve cover; Among them, several disassembly and assembly components are arranged in an array.

4. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 3, characterized in that, The limiting component includes two extrusion strips disposed above the valve body. The bottom of the lower extrusion strip is fixedly connected to the valve body, and the top of the upper extrusion strip is fixedly connected to the valve cover. The diaphragm has several through holes, and a limiting component is disposed outside the diaphragm. Among them, several through holes are arranged in an array.

5. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 4, characterized in that, The positioning assembly includes several positioning rods fixedly connected to the top of the valve body, and the valve cover is provided with positioning elements; Among them, several positioning rods are arranged in an array.

6. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 5, characterized in that, The disassembly and assembly assembly includes a bolt disposed within the valve body, a washer disposed above the bolt, a nut disposed above the washer, and a snap-fit ​​component disposed outside the bolt; The bolts and nuts are compatible.

7. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 6, characterized in that, The rotating component includes a handle rotatably connected to the inner wall of the valve cover, a slide rod fixedly connected to the bottom of the handle, a threaded sleeve slidably connected to the outer wall of the slide rod, and the bottom of the threaded sleeve rotatably connected to a protrusion. The inner wall of the valve cover has a threaded groove, and the outer wall of the threaded sleeve has a threaded groove, and the threaded groove of the threaded sleeve is compatible with the threaded groove of the valve cover.

8. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 7, characterized in that, The limiting component includes two limiting grooves 1 respectively opened on the side of the valve body and the valve cover that are close to each other, a limiting groove 2 opened on the side of the valve body and the valve cover that are close to each other, and a plurality of limiting grooves 3 opened on the side of the valve body and the valve cover that are close to each other. Among them, two limiting grooves 1 are respectively adapted to two protruding strips 2, two limiting grooves 2 are respectively adapted to two protruding strips 3, and several limiting grooves 3 are respectively adapted to several protruding strips 1.

9. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 8, characterized in that, The positioning element includes several through holes 2 formed in the inner wall of the diaphragm, and several through holes 2 penetrate the diaphragm. The inner wall of the valve cover is provided with several positioning holes, and several positioning holes penetrate the valve cover. Among them, several positioning rods are respectively matched with several through holes, and several positioning rods are respectively matched with several positioning holes.

10. The diaphragm valve with an elastic load-sharing diaphragm clamping structure according to claim 9, characterized in that, The snap-fit ​​component includes a polygonal groove formed on the outer wall of the valve body, and the outer wall of the bolt is fixedly connected to a polygonal block; Among them, the polygonal slot is adapted to the polygonal block.

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